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Rolldown

Free#7 of 27 in JavaScript Build Tools

Rolldown: A free, open-source Rust bundler for Rollup-oriented JavaScript projects. Ranked #7 of 27 in JavaScript Build Tools by our editors (8.6/10); pricing: Free plan; best for rollup-compatible Rust builds.

8.6/10Editor score

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Rolldown8.6 Visit Rolldown

At a glance

Editor score
8.6 / 10
Pricing
Free plan
Best for
Rollup-compatible Rust builds
Free plan
Yes
Paid from
Free
TypeScript support
Yes
Facts checked
20 Sep 2026

Where it wins
- Rust-based bundling with Rollup-compatible configuration and plugins
- Supports TypeScript, JSX, code splitting, tree shaking, and source maps
- Provides CLI plus JavaScript build, bundle, and watch APIs
Where it doesn't
- Its workflow is centered on code, configuration, CLI, and APIs
- The product focus is bundling rather than broader delivery workflows
- Teams may need to review compatibility with existing Rollup plugins

Our verdict on Rolldown

Rolldown is an open-source, Rust-based JavaScript bundler from VoidZero Inc. It is designed for developers building web applications and libraries who want Rollup-compatible configuration and plugin APIs alongside TypeScript and JSX transformation support. The tool runs across Windows, macOS, and Linux, and also offers JavaScript APIs for programmatic builds, bundles, and watch workflows. It is a strong fit for teams already working with Rollup-oriented build configuration or evaluating a Rust-based bundling approach.

The published product details show a free, open-source model rather than paid plan tiers. Its core feature set includes automatic and manual code splitting, tree shaking and dead-code elimination, built-in minification and transforms, and separate, inline, and hidden source-map generation. Developers can access these capabilities through the command-line interface or JavaScript APIs, giving the product a code-first shape. That makes it suitable for projects where build behavior belongs in configuration and automation rather than a visual interface.

Rolldown’s main ecosystem advantage is compatibility: its configuration and plugin API are designed around Rollup, while the project is positioned as the unified bundler powering Vite 8. Teams with Rollup-based conventions can consider it when Rust-based bundling is a priority, especially when TypeScript, JSX, splitting, tree shaking, and source maps are part of the build. It is less suited to teams looking for a broader application delivery product or a GUI-led build workflow, since its stated scope is JavaScript bundling through CLI and programmatic interfaces.

Your product? Our editors can test Rolldown in depth and publish a review, labelled as paid · from $149/mo →

Rolldown pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on rolldown.rs

Rolldown fact sheet

Free plan	Yes
Paid from	Free
TypeScript support	Yes
Code splitting	Yes
Tree shaking	Yes
Source maps	Yes
Plugin API	Yes
Remote build cache	Not verified
Deployment	Desktop
Platforms	Windows, macOS, Linux
Support	Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Free plan
Website	rolldown.rs
Facts checked	20 Sep 2026

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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Rolldown for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

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Featured on iTechGuides

Rolldown is listed in our JavaScript Build Tools directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update